Steam-heating apparatus.



E. L. DAVIS.

STEAM HEATING APPARATUS.

APPLICATION FILED SEPT. 14. 1914.

. 1,212,61 1. Patented Jan. 16,1917.

STEAM-HEATING APPAnArU s.

' To all whom it may concern: [7

, is a specification.

' tion returned to its Be it known that I, EDWARD L. DAVIS, acitizen of the United States, residing at Schenectady, inthe county of Schenectady and "State of New York, have invented certain new and useful Improvements'in Steam- Heating Apparatus, of which the following The object of he invention is to provide a steam heating system by which radiators of the usual type may steam in any graduations within the range of the supply, and the water of condensa- It is an importantobject to enable the location of a controlling valve at ,the-top of the radiator, whereby steam may be admitted at the upper part of the radiator'or coil radiators, and to e while the. water of condensation isconducted from the lower part into the same pipe from which steam is derived without liability of steam entering through the outlet.

It is a further object to eifect a simplification of the structural parts. required to enable the modulation of heat radiation in ecta saving in material and labor over pr or systems and construction and to present a compact embodiment of the invention whereby the results desired for it not only steam heating systems the may be attained.

It is to be particularly noted that my inthe cost of supply of supplying steam to the radiator, a much employed than is required in the conventional one-pipe steam heating system.

.In the customary installationof one pipe sup ly valve must be placed at the base of'the radiator furnishes the radiator with steam but it. also receives and leads away the water of condensation therefrom, for

this reason a supply valve when so disposed can not be controlled nor regulated to fur-' nish a lesser amount of steam than its maximum opening aflords as'it must be either turned full open; or tightly closed and the radiator to which it is attached is either entirely heated or cold. -My invention overcomes these d i'flic'ulties. f

Additional objects, advantages and features of invention will appear om the construction, arrangement and combination of.

parts hereinafter set forth and illustrated in the drawings. where,

Specification of Letters Patent.-

' outlet structure,

be supplied with source, by a single pipe.-

smaller sized valve may be with the tap opening Patented Jan. 1 1917.v

Application fi led September 14, 1914. Serial No. 861,574.

' Figure 1 is a side elevation of: a radiator and immediate connections constituting one of the possible embodiments ofmy invention, Fig. 2 is a similar view illustrating an arrangement suitable for certain types of radiators, Fig. 3 is a detail section of the Fig. 1 is an elevation of the valve plug at the outlet, Fig. 5 is a detail of 'a-modified construction of fitting for controlling movementv of fluids from the outlet, particularly suitable for use as shown in Fig. 2, but adaptable readily to use with the arrangement shownin Fig. 1, as will be understood from the particular description following.

There is illustrated 'a radiator 10 of usuaL construction to which steam is supplied from any suitable source through, a pipe 11 of usual'size for the capacity of the radiator. The upper boss 12of one end column is tappedand fitted withan inlet valve 13, of any usual being formally .indicated from which the supply pipe 14 extends vertically downward. ,This pipe may be smaller than the one 11, although this is not essential, and is connected to the pipe 11 by the T 15, from the center of which connection is made to the outlet opening 16, which may be the standard tapping in the lower boss 17 of the column 1 8 of the radiator to which the inlet valve 13 is connected. The connection between the outlet and the T 15 is'formed by asmall nipple 19 which is centered eccentrically of the outlet opening, and closely adjacent the bottom thereof. This nipple would ordinarily require a bushing, the function of which is served by a cored externally threaded cylindrical castin-g 20 with which the nipple 19 is engaged, and which in addition forms a casing by which a controlling device may be accommodated at the same'time in the outlet opening. The casting 20 .isclosed at its outer end by a head plate 21 tapped as at 22 to receive the outlet nipple 19, and in line with 'this open ing a larger inlet opening 23'is formed, in a thinner head 21 closing the inner end of the casting. The opening 23 is smoothly finished and sli htly tapered so as to receive the circular'pate 25 to be secured by a tight push fit, and having a stop flange 26 to limit its engagement in the casing. An outlet port 27 is formed in this plate 25 concentric 22 at the outer side construction, in the present case, a graduated hand controlled supply valve valve as shown in Figs. 2 and 5.

of the casing. Pivoted between ears 28 on the plate 25 located above the port there is an arm 29, ofl set to lie spaced from and parallel to the plate 25, upon which arm, next to the plate, there is carried a splayed disk valve 30 arranged to seat snugly at the inner end of the port 27. The plate 25 and valve are preferably of brass or other com paratively non-corrosive metal, while the casting 20 may be of iron.

The parts being assembled as described, it will be apparent that upon admission of steam to the pipe 11, it is prevented from entering at the bottom of the radiator by the valve 30 seating over the port 27, and it can only gain accessto the radiator through the valve 13 when open. By proper adjustment of the valve 13 any desired fioW of steam may be obtained, without liability of impedance, or irregularity of action, as all water of condensation falls away anddrains through the port 27, the valve 30 being so hung as to yield to slight pressure from Within. The radiator may thus be wholly or partially heated to the degree desired.

Where the radiator is of considerable length, principles well understood in the art may dictate that the outlet should be located at the opposite end from the inlet. In this case it is desirable to utilize a T The T casting 31 is made'with a proper seat 32 at the inner end of the center connection, and by means of a pin 33 engaged through the casting from the outside, the valve arm 34 ispivoted so that the valve 35 thereon may engage in the seat. The T 31 is connected between the pipes 11 and 14 and drain connections 36 made between the outlet and the center of the T. My device as shown in Fig. 3'may, however be utilized in the outlet 37, and simple drain connections made from the opening 22' to the pipe 11.

It is apparent that my invention will be equally applicable to use in connection with a steam supply above or below atmospheric pressure.

It is to be noted that the invention will separate the steam from the returning water of condensation upon admission to the radiator so that the heating vehicle will be drier than is possible with an inlet valve placed at the bottom of the radiator as in the ordinary one-pipe system. Accumulation of water in radiators, either in the form of excessive moisture in the steam or by condensation after closing of the supply valve, is obviated. There will consequently be less irregularity in the operation of the system. For instance, with the ordinaryv installation,

as the radiator may only be heated to the maximum when the supply valve is opened, when this valve is closed, a large quantity of water will accumulate. When next it is opened, the returning water will chill a large section of the supply line, causing a lowering of pressure in the entire system, with a possible deficiency in heat at other points, as well as delayed heating of the radiator fromwhich the Water escapes. When a number of radiators have thus accumulated water, the level of water in the boiler from which the steam is derived may be replenished, and upon opening of the valves on the radiators, the boiler may be flooded, or at least such excess accumulated as to materially affect its efliciency.

The device secures all the advantages of the familiar one-pipe systems, with additional advantages. However, it is not limited to such uses and systems, but will be found applicable to other situations and systems as well. It is obvious, too, that other embodiments of the invention are possible withinthe scope of the claims, in addition to that herein shown and described.

What is claimed is:

1. In steam heating apparatus, a bushing and valve casing to engage Within the outlet of radiators comprising a cylindrical exteriorly threaded hollow casting having integral closing'plates at each end, one having a tapped opening for pipe connection, the other having an inlet port formed therein to receive the return from a radiator, and a valve Within the casing movably mounted for engagement over the port yieldably for egress of water.

2. A device for the purpose described comprising a bushing and casing consisting of an exteriorly threaded hollow cylindrical element having head portions thereacross at .each end, and constructed to be screwed into the bottom of a radiator unit, one of the heads having an interior threaded opening therethrough coincident at one side with the inner surface of the cylindrical portion mentioned, the other head having an opposed opemng therein, a ported element fixed in the last named opening, and a check valve mounted on the inner side thereof, to close the port in said ported element, and yieldable to pressure therethrough.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWARD L. DAVIS.

Witnesses:

MARY CALo, C. E. JAMES. 

